错误TypeError：无法读取未定义的属性'loadEvents'

Question

我在名为的组件中有方法代码：

  

user.service.ts

---

  

从“ ionic2-calendar / calendar”导入{CalendarComponent};

  @ViewChild(CalendarComponent) myCal: CalendarComponent;
 addEvent() {
    let eventCopy = {
      title: this.event.title,
      startTime:  new Date(this.event.startTime),
      endTime: new Date(this.event.endTime),
      allDay: this.event.allDay,

    }

    if (eventCopy.allDay) {
      let start = eventCopy.startTime;
      let end = eventCopy.endTime;

      eventCopy.startTime = new Date(Date.UTC(start.getUTCFullYear(), start.getUTCMonth(),

     

start.getUTCDate（）））;             eventCopy.endTime = new Date（Date.UTC（end.getUTCFullYear（），end.getUTCMonth（），end.getUTCDate（）+ 1））;           }

    this.eventSource.push(eventCopy);
    this.myCal.loadEvents();
    this.resetEvent();
  }

---

这是文件中的表单：

> tab2.html

<ion-card>
        <ion-card-header tappable (click)="collapseCard = !collapseCard">
          <ion-card-title>Nueva tarea</ion-card-title>
        </ion-card-header>
       <ion-card-content *ngIf="!collapseCard">

           <ion-item>
            <ion-input type="text" placeholder="Describe tu tarea" [(ngModel)]="event.title"></ion-input>
          </ion-item>

          <ion-item>
            <ion-label>Hora de inicio</ion-label>
            <ion-datetime displayFormat="MM/DD/YYYY HH:mm" pickerFormat="MMM D:HH:mm" [(ngModel)]="event.startTime" [min]="minDate"></ion-datetime>
          </ion-item>
          <ion-item>
            <ion-label>Hora final</ion-label>
            <ion-datetime displayFormat="MM/DD/YYYY HH:mm" pickerFormat="MMM D:HH:mm" [(ngModel)]="event.endTime" [min]="minDate"></ion-datetime>
          </ion-item>
          <ion-item>
            <ion-label>Todo el día?</ion-label>
            <ion-checkbox [(ngModel)]="event.allDay"></ion-checkbox>
          </ion-item>
          <ion-button fill="outline" expand="block" (click)="addEvent()">AddEvent</ion-button>

        </ion-card-content>
      </ion-card>

---

但这会引发下一个错误： Error

我该如何解决？

谢谢！